Cummins Filtration Ip, Inc.

Cummins Emission Solutions Inc.

Fleetguard, Inc.

Kenneth Pawson

Jay V Warner

Z Gerald Liu

William C Haberkamp

Randolph G Zoran

Patrick M Pierz

David M Sarcona

James Goss

Duncan Engeham

David Elsey

Paul Smith

Ken Capel

Debbie Davidson

Andrew Critchley

Piotr Uban

Jean-Marc Vasnier

Described herein are various embodiments of a reductant decomposition system. According to one representative embodiment, the reductant decomposition system includes an exhaust gas chamber including an inlet and outlet. The system also includes a first exhaust gas distribution component positioned within the chamber and communicable in exhaust gas receiving communication with the outlet. The first exhaust gas distribution component causes swirling exhaust gas flow patterns within the exhaust gas chamber. Additionally, the system includes a second exhaust gas distribution component positioned within the chamber and communicable in exhaust gas providing communication with the inlet. The second exhaust gas distribution component includes features that cause a swirling exhaust gas flow pattern within a space defined by the second exhaust gas distribution component. Further, the system includes a reductant injector coupled to the exhaust gas chamber. The reductant injector is communicable in reductant injecting communication with exhaust gas within the chamber.

Reductant decomposition system

An exhaust treatment packaging apparatus, system, and method includes an elongate exhaust gas passage comprising an inlet for the entrance of flowing exhaust gases and an outlet for the exit of the gases. A catalytic device comprising an inlet and an outlet completely or partially overlaps the passage to reduce the length required for the system. The passage outlet is disposed adjacent the catalytic device inlet, and a flow connector connects the passage outlet to the catalytic device inlet. A particulate filter or other treatment device may be substituted for or added to the catalytic device. A doser disposed upstream of the passage doses an additive which evaporates, mixes, or otherwise undergoes change in the passage before reaching the catalytic device.

Exhaust treatment packaging apparatus, system, and method

An exhaust aftertreatment assembly and method enables lateral removal of an aftertreatment component from between first and second assembly components for servicing.

Serviceable exhaust aftertreatment assembly and method

An exhaust aftertreatment filter ( ) includes a housing ( ) extending axially along an axis ( ) between distally opposite first and second ends ( and ), a first port ( ) at the first end of the housing, a second port ( ) also at the first end of the housing, one of the first and second ports being an inlet, and the other being an outlet, the housing having an intermediate section ( ) between the distally opposite ends, the intermediate section having a given cross sectional area A along a sectional plane transverse to the axis, a catalytic exhaust filter element ( ) in the intermediate section and entirely filling the cross sectional area A except for a smaller cut-out ( ) in the exhaust filter element of cross sectional area A , the exhaust filter element having a cross sectional area A &equals;A &minus;A , a transfer tube ( ) extending through the cut-out and communicating with the second port. Exhaust flows axially ( ) through the exhaust filter element between first and second distally opposite sides ( and ) of the exhaust filter element, the first side facing the first end of the housing, the second side facing the second end of the housing, exhaust flowing axially through the exhaust filter element in one axial direction ( ) and flowing through the transfer tube and cut-out in the opposite axial direction ( ).

Space efficient exhaust aftertreatment filter

Growing community of inventors

Northampton, United Kingdom

Kenneth Pawson